package com.netease;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * Created by meichen on 2018/3/9.
 */
public class MD5 {
    public static String getMD5(byte[] source){
        String s = null;
        char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
                'a', 'b', 'c', 'd', 'e', 'f' };
        try{
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(source);
            byte tmp[] = md.digest();
            char str[] = new char[16 * 2];
            int k = 0;
            for(int i = 0; i < 16; i++){
                byte byte0 = tmp[i];
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            s = new String(str);

        }catch (NoSuchAlgorithmException e){
            e.printStackTrace();
        }
        return s;
    }
}
